PERIODIC MAINTENANCE AND MINOR REPAIR
6-9
6
3. Remove the spark plug as shown,
with the spark plug wrench includ-
ed in the owner’s tool kit.
To check the spark plugs
1. Check that the porcelain insulator
around the center electrode on
each spark plug is a medium-to-
light tan (the ideal color when the
vehicle is ridden normally).
2. Check that all spark plugs installed
in the engine have the same color.
NOTE:
If any spark plug shows a distinctly dif-
ferent color, the engine could be defec-
tive. Do not attempt to diagnose such
problems yourself. Instead, have a
Yamaha dealer check the vehicle.
3. Check each spark plug for elec-
trode erosion and excessive car-
bon or other deposits, and replace
it if necessary.
To install a spark plug
1. Measure the spark plug gap with a
wire thickness gauge and, if nec-
essary, adjust the gap to specifica-
tion.
2. Clean the surface of the spark plug
gasket and its mating surface, and
then wipe off any grime from the
spark plug threads.
3. Install the spark plug with the
spark plug wrench, and then tight-
en it to the specified torque.
1. Spark plug wrench
Specified spark plug:
NGK/BPR7ES
DENSO/W22EPR-U
1. Spark plug gap
Spark plug gap:
0.7–0.8 mm (0.028–0.031 in)
Tightening torque:
Spark plug:
20 Nm (2.0 m·kgf, 14.5 ft·lbf)
5YS10.book Page 9 Wednesday, May 14, 2003 6:32 PM
Summary of Contents for Star XVS1100C
Page 1: ...5YS 28199 10 LIT 11626 17 24 XVS1100S C XVS1100AS C XVS1100ATS C OWNER S MANUAL ...
Page 2: ...EAU10041 5YS10 book Page 1 Wednesday May 14 2003 6 32 PM ...
Page 94: ...CONSUMER INFORMATION 9 8 9 5YS10 book Page 8 Wednesday May 14 2003 6 32 PM ...
Page 99: ...PRINTED IN JAPAN 2003 05 3 3 2 CR E PRINTED ON RECYCLED PAPER YAMAHA MOTOR CO LTD ...